ct vhost_virtqueue *vq,
- void *addr, unsigned int size,
+ void __user *addr, unsigned int
size,
int type)
{
void __user *uaddr = vhost_vq_meta_fetch(vq,
Acked-by: Jason Wang
On 2020/5/14 下午5:35, Michael S. Tsirkin wrote:
On Thu, May 14, 2020 at 03:25:49PM +0800, Jason Wang wrote:
We reset IOTLB during device reset this breaks the assumption that the
mapping needs to be controlled via vDPA DMA ops explicitly in a
incremental way. So the networking will be broken
We reset IOTLB during device reset this breaks the assumption that the
mapping needs to be controlled via vDPA DMA ops explicitly in a
incremental way. So the networking will be broken after e.g a guest
reset.
Fix this by not resetting the IOTLB during device reset.
Signed-off-by: Jason Wang
On 2020/5/13 下午12:42, Zhu, Lingshan wrote:
On 5/13/2020 12:12 PM, Jason Wang wrote:
On 2020/5/12 下午4:00, Zhu Lingshan wrote:
This commit move IRQ request and free operations from probe()
to VIRTIO status change handler to comply with VIRTIO spec.
VIRTIO spec 1.1, section 2.1.2 Device
On 2020/5/13 下午12:42, Zhu, Lingshan wrote:
On 5/13/2020 12:12 PM, Jason Wang wrote:
On 2020/5/12 下午4:00, Zhu Lingshan wrote:
This commit move IRQ request and free operations from probe()
to VIRTIO status change handler to comply with VIRTIO spec.
VIRTIO spec 1.1, section 2.1.2 Device
andler, we don't need to do this
twice; handle status == 0 after DRIVER_OK -> !DRIVER_OK handler (Jason Wang)
Patch looks good to me, but with this patch ping cannot work on my
machine. (It works without this patch).
Thanks
drivers/vdpa/ifcvf/
On 2020/5/9 下午8:21, Jason Gunthorpe wrote:
On Fri, May 08, 2020 at 05:09:09PM -0700, Raj, Ashok wrote:
Hi Jason
On Fri, May 08, 2020 at 08:16:10PM -0300, Jason Gunthorpe wrote:
On Fri, May 08, 2020 at 01:47:10PM -0700, Raj, Ashok wrote:
Even when uaccel was under development, one of the op
On 2020/5/12 上午11:38, Jason Wang wrote:
static int ifcvf_start_datapath(void *private)
{
struct ifcvf_hw *vf = ifcvf_private_to_vf(private);
@@ -118,9 +172,12 @@ static void ifcvf_vdpa_set_status(struct
vdpa_device *vdpa_dev, u8 status)
{
struct ifcvf_adapter *adapter
On 2020/5/11 下午6:18, Francesco Lavra wrote:
On 5/11/20 11:26 AM, Jason Wang wrote:
On 2020/5/11 下午3:19, Zhu Lingshan wrote:
This commit move IRQ request and free operations from probe()
to VIRTIO status change handler to comply with VIRTIO spec.
VIRTIO spec 1.1, section 2.1.2 Device
On 2020/5/11 下午6:11, Zhu, Lingshan wrote:
On 5/11/2020 5:26 PM, Jason Wang wrote:
On 2020/5/11 下午3:19, Zhu Lingshan wrote:
This commit move IRQ request and free operations from probe()
to VIRTIO status change handler to comply with VIRTIO spec.
VIRTIO spec 1.1, section 2.1.2 Device
On 2020/5/11 下午3:19, Zhu Lingshan wrote:
This commit move IRQ request and free operations from probe()
to VIRTIO status change handler to comply with VIRTIO spec.
VIRTIO spec 1.1, section 2.1.2 Device Requirements: Device Status Field
The device MUST NOT consume buffers or send any used buffer
seems too aggressive. So I prefer this patch.
Acked-by: Jason Wang
drivers/vdpa/vdpa_sim/vdpa_sim.c | 15 +++
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
index 7957d2d41fc4..01c456f7c1f7 100644
On 2020/5/8 上午10:16, Peter Xu wrote:
On Thu, May 07, 2020 at 08:56:33PM -0300, Jason Gunthorpe wrote:
On Thu, May 07, 2020 at 06:22:23PM -0400, Peter Xu wrote:
On Thu, May 07, 2020 at 04:03:34PM -0600, Alex Williamson wrote:
On Thu, 7 May 2020 17:47:44 -0400
Peter Xu wrote:
Hi, Alex,
On
On 2020/5/6 下午5:46, Michael S. Tsirkin wrote:
There
are a lot of unanswered questions on how this will be implemented.
Thus, I cannot layout how we are going to leverage this info yet, but
your patch are killing this info, which IHMO is going in the wrong
direction.
I can copy vnet header ahea
On 2020/5/6 下午5:54, Michael S. Tsirkin wrote:
On Wed, May 06, 2020 at 04:19:40PM +0800, Jason Wang wrote:
On 2020/5/6 下午3:53, Michael S. Tsirkin wrote:
On Wed, May 06, 2020 at 02:16:32PM +0800, Jason Wang wrote:
We tried to reserve space for vnet header before
xdp.data_hard_start. But this
On 2020/5/6 下午8:08, Michael S. Tsirkin wrote:
On Wed, May 06, 2020 at 04:21:15PM +0800, Jason Wang wrote:
On 2020/5/6 下午3:37, Michael S. Tsirkin wrote:
On Wed, May 06, 2020 at 02:16:33PM +0800, Jason Wang wrote:
We should not exclude headroom and tailroom when XDP is set. So this
patch
On 2020/5/6 下午4:08, Michael S. Tsirkin wrote:
So for mergeable bufs, we use ewma machinery to guess the correct buffer
size. If we don't guess correctly, XDP has to do aggressive copies.
Problem is, xdp paths do not update the ewma at all, except
sometimes with XDP_PASS. So whatever we happen
On 2020/5/6 下午4:21, Jesper Dangaard Brouer wrote:
On Wed, 6 May 2020 14:16:32 +0800
Jason Wang wrote:
We tried to reserve space for vnet header before
xdp.data_hard_start. But this is useless since the packet could be
modified by XDP which may invalidate the information stored in the
On 2020/5/6 下午3:37, Michael S. Tsirkin wrote:
On Wed, May 06, 2020 at 02:16:33PM +0800, Jason Wang wrote:
We should not exclude headroom and tailroom when XDP is set. So this
patch fixes this by initializing the truesize from PAGE_SIZE when XDP
is set.
Cc: Jesper Dangaard Brouer
Signed-off
On 2020/5/6 下午3:53, Michael S. Tsirkin wrote:
On Wed, May 06, 2020 at 02:16:32PM +0800, Jason Wang wrote:
We tried to reserve space for vnet header before
xdp.data_hard_start. But this is useless since the packet could be
modified by XDP which may invalidate the information stored in the
We should not exclude headroom and tailroom when XDP is set. So this
patch fixes this by initializing the truesize from PAGE_SIZE when XDP
is set.
Cc: Jesper Dangaard Brouer
Signed-off-by: Jason Wang
---
drivers/net/virtio_net.c | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff
ot reserve space for vnet header in this case.
Cc: Jesper Dangaard Brouer
Signed-off-by: Jason Wang
---
drivers/net/virtio_net.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 11f722460513..98dd75b665a5 100644
---
64_stats_update_end_irqrestore(&rq->stats.syncp);
}
return !oom;
Acked-by: Jason Wang
On 2020/4/30 下午6:07, Michael S. Tsirkin wrote:
On Thu, Apr 30, 2020 at 03:32:55PM +0530, Srivatsa Vaddagiri wrote:
The Type-1 hypervisor we are dealing with does not allow for MMIO transport.
How about PCI then?
Or maybe you can use virtio-vdpa.
Thanks
On 2020/4/29 上午12:00, Stefano Garzarella wrote:
On Tue, Apr 28, 2020 at 04:13:22PM +0800, Jason Wang wrote:
On 2020/4/27 下午10:25, Stefano Garzarella wrote:
Hi David, Michael, Stefan,
I'm restarting to work on this topic since Kata guys are interested to
have that, especially on the
On 2020/4/27 下午10:25, Stefano Garzarella wrote:
Hi David, Michael, Stefan,
I'm restarting to work on this topic since Kata guys are interested to
have that, especially on the guest side.
While working on the v2 I had few doubts, and I'd like to have your
suggestions:
1. netns assigned to th
be used by
vfio-mdev and virtio-mdev.
Signed-off-by: Jason Wang
---
.../driver-api/vfio-mediated-device.rst | 35 +
MAINTAINERS | 1 +
drivers/gpu/drm/i915/gvt/kvmgt.c | 18 ---
drivers/s390/cio/vfio_ccw_ops.c
ectly.
So this patch adds id_table to mdev_driver and class_id for mdev
device with the match method for mdev bus.
Signed-off-by: Jason Wang
---
.../driver-api/vfio-mediated-device.rst | 5 +
drivers/gpu/drm/i915/gvt/kvmgt.c | 1 +
drivers/s390/cio/vfio_ccw_
On 2019/10/23 下午6:13, Simon Horman wrote:
On Tue, Oct 22, 2019 at 09:32:36AM +0800, Jason Wang wrote:
On 2019/10/22 上午12:31, Simon Horman wrote:
On Mon, Oct 21, 2019 at 05:55:33PM +0800, Zhu, Lingshan wrote:
On 10/16/2019 5:53 PM, Simon Horman wrote:
Hi Zhu,
thanks for your patch.
On Wed
On 2019/10/23 下午6:11, Tiwei Bie wrote:
On Wed, Oct 23, 2019 at 03:25:00PM +0800, Jason Wang wrote:
On 2019/10/23 下午3:07, Tiwei Bie wrote:
On Wed, Oct 23, 2019 at 01:46:23PM +0800, Jason Wang wrote:
On 2019/10/23 上午11:02, Tiwei Bie wrote:
On Tue, Oct 22, 2019 at 09:30:16PM +0800, Jason Wang
On 2019/10/23 下午5:24, Zhu, Lingshan wrote:
set_config/get_config is missing. It looks to me they are not
hard, just implementing the access to dev_cfg. It's key to make
kernel virtio driver to work.
And in the new version of virito-mdev, features like _F_LOG_ALL
should be advertised thro
On 2019/10/23 下午3:07, Tiwei Bie wrote:
On Wed, Oct 23, 2019 at 01:46:23PM +0800, Jason Wang wrote:
On 2019/10/23 上午11:02, Tiwei Bie wrote:
On Tue, Oct 22, 2019 at 09:30:16PM +0800, Jason Wang wrote:
On 2019/10/22 下午5:52, Tiwei Bie wrote:
This patch introduces a mdev based hardware vhost
On 2019/10/23 下午2:19, Zhu, Lingshan wrote:
On 10/22/2019 9:05 PM, Jason Wang wrote:
On 2019/10/22 下午2:53, Zhu Lingshan wrote:
On 10/21/2019 6:19 PM, Jason Wang wrote:
On 2019/10/21 下午5:53, Zhu, Lingshan wrote:
On 10/16/2019 6:19 PM, Jason Wang wrote:
On 2019/10/16 上午9:30, Zhu
On 2019/10/23 上午11:02, Tiwei Bie wrote:
On Tue, Oct 22, 2019 at 09:30:16PM +0800, Jason Wang wrote:
On 2019/10/22 下午5:52, Tiwei Bie wrote:
This patch introduces a mdev based hardware vhost backend.
This backend is built on top of the same abstraction used
in virtio-mdev and provides a
On 2019/10/22 下午5:52, Tiwei Bie wrote:
This patch introduces a mdev based hardware vhost backend.
This backend is built on top of the same abstraction used
in virtio-mdev and provides a generic vhost interface for
userspace to accelerate the virtio devices in guest.
This backend is implemented
On 2019/10/22 下午2:53, Zhu Lingshan wrote:
On 10/21/2019 6:19 PM, Jason Wang wrote:
On 2019/10/21 下午5:53, Zhu, Lingshan wrote:
On 10/16/2019 6:19 PM, Jason Wang wrote:
On 2019/10/16 上午9:30, Zhu Lingshan wrote:
This commit introduced IFC VF operations for vdpa, which complys to
On 2019/10/22 上午12:31, Simon Horman wrote:
On Mon, Oct 21, 2019 at 05:55:33PM +0800, Zhu, Lingshan wrote:
On 10/16/2019 5:53 PM, Simon Horman wrote:
Hi Zhu,
thanks for your patch.
On Wed, Oct 16, 2019 at 09:10:40AM +0800, Zhu Lingshan wrote:
...
+static void ifcvf_read_dev_config(struct
On 2019/10/21 下午6:00, Zhu, Lingshan wrote:
On 10/16/2019 4:40 PM, Jason Wang wrote:
On 2019/10/16 上午9:30, Zhu Lingshan wrote:
This commit introduced ifcvf_base layer, which handles IFC VF NIC
hardware operations and configurations.
It's better to describe the difference between i
On 2019/10/21 下午5:57, Zhu, Lingshan wrote:
On 10/16/2019 4:45 PM, Jason Wang wrote:
On 2019/10/16 上午9:30, Zhu Lingshan wrote:
+ */
+#define IFCVF_TRANSPORT_F_START 28
+#define IFCVF_TRANSPORT_F_END 34
+
+#define IFC_SUPPORTED_FEATURES \
+ ((1ULL << VIRTIO_NET
On 2019/10/21 下午5:53, Zhu, Lingshan wrote:
On 10/16/2019 6:19 PM, Jason Wang wrote:
On 2019/10/16 上午9:30, Zhu Lingshan wrote:
This commit introduced IFC VF operations for vdpa, which complys to
vhost_mdev interfaces, handles IFC VF initialization,
configuration and removal.
Signed-off-by
On 2019/10/18 下午10:20, Cornelia Huck wrote:
On Thu, 17 Oct 2019 18:48:35 +0800
Jason Wang wrote:
This patch introduces a new mdev transport for virtio. This is used to
use kernel virtio driver to drive the mediated device that is capable
of populating virtqueue directly.
A new virtio-mdev
On 2019/10/15 下午3:35, Christoph Hellwig wrote:
On Fri, Oct 11, 2019 at 06:25:19PM -0700, Ram Pai wrote:
From: Thiago Jung Bauermann
Normally, virtio enables DMA API with VIRTIO_F_IOMMU_PLATFORM, which must
be set by both device and guest driver. However, as a hack, when DMA API
returns physi
On 2019/10/16 上午9:30, Zhu Lingshan wrote:
This commit introduced IFC VF operations for vdpa, which complys to
vhost_mdev interfaces, handles IFC VF initialization,
configuration and removal.
Signed-off-by: Zhu Lingshan
---
drivers/vhost/ifcvf/ifcvf_main.c | 541 +
On 2019/10/16 上午9:30, Zhu Lingshan wrote:
+ */
+#define IFCVF_TRANSPORT_F_START 28
+#define IFCVF_TRANSPORT_F_END 34
+
+#define IFC_SUPPORTED_FEATURES \
+ ((1ULL << VIRTIO_NET_F_MAC) | \
+(1ULL << VIRTIO_F_ANY_LAYOUT)| \
On 2019/10/16 上午9:30, Zhu Lingshan wrote:
This commit introduced ifcvf_base layer, which handles IFC VF NIC
hardware operations and configurations.
It's better to describe the difference between ifc vf and virtio in the
commit log or is there a open doc for this?
Signed-off-by: Zhu Lin
On 2019/10/16 上午9:36, Zhu Lingshan wrote:
failed to send to kvm list, resend, sorry for the inconvenience.
THanks,
BR
Zhu Lingshan
On 10/16/2019 9:30 AM, Zhu Lingshan wrote:
Hi all:
This series intends to introduce Intel IFC VF NIC driver for Vhost
Data Plane Acceleration.
Here comes two
On 2019/10/16 上午4:20, Michael S. Tsirkin wrote:
On Mon, Oct 14, 2019 at 09:43:25AM +0800, Jason Wang wrote:
On 2019/10/13 上午4:27, Michael S. Tsirkin wrote:
On Sat, Oct 12, 2019 at 03:28:49PM +0800, Jason Wang wrote:
On 2019/10/11 下午9:45, Michael S. Tsirkin wrote:
The idea is to support
detect buffer overflow in case of bugs
in response to comment by Jason Wang
- minor code tweaks
Changes from v2:
- fixed indirect descriptor batching
reported by Jason Wang
Changes from v1:
- typo fixes
I've just done some quick ben
On 2019/10/14 下午4:17, Stefan Hajnoczi wrote:
SO_VM_SOCKETS_BUFFER_SIZE might have been useful for VMCI-specific
applications, but we should use SO_RCVBUF and SO_SNDBUF for portable
applications in the future. Those socket options also work with other
address families.
I guess these sockopts a
On 2019/10/13 上午4:36, Michael S. Tsirkin wrote:
On Sat, Oct 12, 2019 at 03:30:52PM +0800, Jason Wang wrote:
On 2019/10/11 下午9:46, Michael S. Tsirkin wrote:
With this patch applied, new and old code perform identically.
Lots of extra optimizations are now possible, e.g.
we can fetch multiple
On 2019/10/13 上午4:27, Michael S. Tsirkin wrote:
On Sat, Oct 12, 2019 at 03:28:49PM +0800, Jason Wang wrote:
On 2019/10/11 下午9:45, Michael S. Tsirkin wrote:
The idea is to support multiple ring formats by converting
to a format-independent array of descriptors.
This costs extra cycles, but
tx_timeout statistic and consider this event as an error
(one error per queue), reporting it.
Signed-off-by: Julio Faracco
Signed-off-by: Daiane Mendes
Cc: Jason Wang
---
drivers/net/virtio_net.c | 27 +++
1 file changed, 27 insertions(+)
diff --git a/drivers/net
event in some specific queue of device. This function
still counts tx_timeout statistic and consider this event as an error
(one error per queue), reporting it.
Signed-off-by: Julio Faracco
Signed-off-by: Daiane Mendes
Cc: Jason Wang
---
drivers/net/virtio_net.c | 27
On 2019/10/11 下午9:45, Michael S. Tsirkin wrote:
So the idea is as follows: we convert descriptors to an
independent format first, and process that converting to
iov later.
The point is that we have a tight loop that fetches
descriptors, which is good for cache utilization.
This will also allow
On 2019/10/11 下午9:45, Michael S. Tsirkin wrote:
So the idea is as follows: we convert descriptors to an
independent format first, and process that converting to
iov later.
The point is that we have a tight loop that fetches
descriptors, which is good for cache utilization.
This will also allow
On 2019/10/11 下午9:46, Michael S. Tsirkin wrote:
With this patch applied, new and old code perform identically.
Lots of extra optimizations are now possible, e.g.
we can fetch multiple heads with copy_from/to_user now.
We can get rid of maintaining the log array. Etc etc.
Signed-off-by: Micha
On 2019/10/11 下午9:45, Michael S. Tsirkin wrote:
The idea is to support multiple ring formats by converting
to a format-independent array of descriptors.
This costs extra cycles, but we gain in ability
to fetch a batch of descriptors in one go, which
is good for code cache locality.
To simplif
On 2019/9/25 上午7:06, Alex Williamson wrote:
On Tue, 24 Sep 2019 21:53:30 +0800
Jason Wang wrote:
This patch implements basic support for mdev driver that supports
virtio transport for kernel virtio driver.
Signed-off-by: Jason Wang
---
include/linux/mdev.h| 2 +
include/linux
le name for
the half closed interval and also reduces the chances of some
caller being missed.
Cc: Michael S. Tsirkin"
Cc: Jason Wang
Cc: virtualizat...@lists.linux-foundation.org
Signed-off-by: Davidlohr Bueso
---
drivers/vhost/vhost.c | 19 +--
drivers/vhost/vhost.h |
On 2019/9/27 下午9:23, Michael S. Tsirkin wrote:
On Fri, Sep 27, 2019 at 09:17:56PM +0800, Jason Wang wrote:
On 2019/9/27 下午8:46, Michael S. Tsirkin wrote:
On Fri, Sep 27, 2019 at 08:17:47PM +0800, Jason Wang wrote:
On 2019/9/27 下午5:41, Michael S. Tsirkin wrote:
On Fri, Sep 27, 2019 at 11:27
On 2019/9/27 下午8:46, Michael S. Tsirkin wrote:
On Fri, Sep 27, 2019 at 08:17:47PM +0800, Jason Wang wrote:
On 2019/9/27 下午5:41, Michael S. Tsirkin wrote:
On Fri, Sep 27, 2019 at 11:27:12AM +0800, Jason Wang wrote:
On 2019/9/26 下午9:14, Tiwei Bie wrote:
On Thu, Sep 26, 2019 at 04:35:18AM
On 2019/9/27 下午5:41, Michael S. Tsirkin wrote:
On Fri, Sep 27, 2019 at 11:27:12AM +0800, Jason Wang wrote:
On 2019/9/26 下午9:14, Tiwei Bie wrote:
On Thu, Sep 26, 2019 at 04:35:18AM -0400, Michael S. Tsirkin wrote:
On Thu, Sep 26, 2019 at 12:54:27PM +0800, Tiwei Bie wrote:
[...]
diff --git
On 2019/9/27 下午5:38, Michael S. Tsirkin wrote:
On Fri, Sep 27, 2019 at 04:47:43PM +0800, Jason Wang wrote:
On 2019/9/27 下午12:54, Tiwei Bie wrote:
On Fri, Sep 27, 2019 at 11:46:06AM +0800, Jason Wang wrote:
On 2019/9/26 下午12:54, Tiwei Bie wrote:
+
+static long vhost_mdev_start(struct
On 2019/9/27 下午12:54, Tiwei Bie wrote:
On Fri, Sep 27, 2019 at 11:46:06AM +0800, Jason Wang wrote:
On 2019/9/26 下午12:54, Tiwei Bie wrote:
+
+static long vhost_mdev_start(struct vhost_mdev *m)
+{
+ struct mdev_device *mdev = m->mdev;
+ const struct virtio_mdev_device_ops *
On 2019/9/27 下午4:04, Tiwei Bie wrote:
On Fri, Sep 27, 2019 at 03:14:42PM +0800, Jason Wang wrote:
On 2019/9/27 下午12:54, Tiwei Bie wrote:
+
+ /*
+* In vhost-mdev, userspace should pass ring addresses
+* in guest physical addresses when IOMMU is
On 2019/9/27 下午12:54, Tiwei Bie wrote:
The name could be confusing, get_queue_max() is to get the maximum number of
entries for a virtqueue supported by this device.
OK. It might be better to rename it to something like:
get_vq_num_max()
which is more consistent with the set_vq_num()
On 2019/9/27 下午12:54, Tiwei Bie wrote:
+
+ /*
+* In vhost-mdev, userspace should pass ring addresses
+* in guest physical addresses when IOMMU is disabled or
+* IOVAs when IOMMU is enabled.
+*/
A question here, consi
On 2019/9/27 上午11:46, Jason Wang wrote:
+
+static struct mdev_class_id id_table[] = {
+ { MDEV_ID_VHOST },
+ { 0 },
+};
+
+static struct mdev_driver vhost_mdev_driver = {
+ .name = "vhost_mdev",
+ .probe = vhost_mdev_probe,
+ .remove = vhost_mdev_remove,
+
On 2019/9/26 下午12:54, Tiwei Bie wrote:
This patch introduces a mdev based hardware vhost backend.
This backend is built on top of the same abstraction used
in virtio-mdev and provides a generic vhost interface for
userspace to accelerate the virtio devices in guest.
This backend is implemented
On 2019/9/26 下午9:14, Tiwei Bie wrote:
On Thu, Sep 26, 2019 at 04:35:18AM -0400, Michael S. Tsirkin wrote:
On Thu, Sep 26, 2019 at 12:54:27PM +0800, Tiwei Bie wrote:
[...]
diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h
index 40d028eed645..5afbc2f08fa3 100644
--- a/includ
On 2019/9/24 上午12:31, Matt Cover wrote:
I think it's better to safe to just drop the packet instead of trying to
workaround it.
This patch aside, dropping the packet here
seems like the wrong choice. Loading a
prog at this hookpoint "configures"
steering. The action of configuring
steering sh
On 2019/9/23 下午5:12, wangxu (AE) wrote:
Hi Michael
Thanks for your fast reply.
As the following code, the 2nd branch of iov_iter_advance() does not check if
i->count < size, when this happens, i->count -= size may cause len exceed
INT_MAX, and then total_len exceed INT_MAX.
On 2019/9/24 下午3:21, Ding Xiang wrote:
platform_get_irq already contains error message,
Is this message contained in all possible error path? If not, it's
probably better to keep it as is.
Thanks
so remove
the redundant dev_err message
Signed-off-by: Ding Xiang
---
drivers/virtio/v
device with
mdev based config ops. This means it is a software transport between
mdev driver and mdev device. The transport was implemented through
device specific opswhich is a part of mdev_parent_ops now.
Signed-off-by: Jason Wang
---
drivers/virtio/Kconfig | 7 +
drivers/virtio
On 2019/9/24 上午5:02, Parav Pandit wrote:
> Hi Jason,
>
>
>> -Original Message-
>> From: Jason Wang
>> Sent: Monday, September 23, 2019 8:03 AM
>> To: k...@vger.kernel.org; linux-s...@vger.kernel.org; linux-
>> ker...@vger.kernel.org; dri-d
device with
mdev based config ops. This means it is a software transport between
mdev driver and mdev device. The transport was implemented through
device specific opswhich is a part of mdev_parent_ops now.
Signed-off-by: Jason Wang
---
MAINTAINERS | 1 +
drivers/vfio/mdev
On 2019/9/23 上午11:18, Matt Cover wrote:
On Sun, Sep 22, 2019 at 7:34 PM Jason Wang wrote:
On 2019/9/23 上午9:15, Matt Cover wrote:
On Sun, Sep 22, 2019 at 5:51 PM Jason Wang wrote:
On 2019/9/23 上午6:30, Matt Cover wrote:
On Sun, Sep 22, 2019 at 1:36 PM Michael S. Tsirkin wrote:
On Sun
On 2019/9/23 上午11:00, Matt Cover wrote:
On Sun, Sep 22, 2019 at 7:32 PM Jason Wang wrote:
On 2019/9/23 上午9:20, Matt Cover wrote:
On Sun, Sep 22, 2019 at 5:46 PM Jason Wang wrote:
On 2019/9/23 上午1:43, Matt Cover wrote:
On Sun, Sep 22, 2019 at 5:37 AM Michael S. Tsirkin wrote:
On Fri
On 2019/9/23 上午9:15, Matt Cover wrote:
On Sun, Sep 22, 2019 at 5:51 PM Jason Wang wrote:
On 2019/9/23 上午6:30, Matt Cover wrote:
On Sun, Sep 22, 2019 at 1:36 PM Michael S. Tsirkin wrote:
On Sun, Sep 22, 2019 at 10:43:19AM -0700, Matt Cover wrote:
On Sun, Sep 22, 2019 at 5:37 AM Michael S
On 2019/9/23 上午9:20, Matt Cover wrote:
On Sun, Sep 22, 2019 at 5:46 PM Jason Wang wrote:
On 2019/9/23 上午1:43, Matt Cover wrote:
On Sun, Sep 22, 2019 at 5:37 AM Michael S. Tsirkin wrote:
On Fri, Sep 20, 2019 at 11:58:43AM -0700, Matthew Cover wrote:
Treat a negative return from a
On 2019/9/23 上午6:30, Matt Cover wrote:
On Sun, Sep 22, 2019 at 1:36 PM Michael S. Tsirkin wrote:
On Sun, Sep 22, 2019 at 10:43:19AM -0700, Matt Cover wrote:
On Sun, Sep 22, 2019 at 5:37 AM Michael S. Tsirkin wrote:
On Fri, Sep 20, 2019 at 11:58:43AM -0700, Matthew Cover wrote:
Treat a neg
On 2019/9/23 上午1:43, Matt Cover wrote:
On Sun, Sep 22, 2019 at 5:37 AM Michael S. Tsirkin wrote:
On Fri, Sep 20, 2019 at 11:58:43AM -0700, Matthew Cover wrote:
Treat a negative return from a TUNSETSTEERINGEBPF bpf prog as a signal
to fallback to tun_automq_select_queue() for tx queue selecti
device with
mdev based config ops. This means, unlike the exist hardware
transport, this is a software transport between mdev driver and mdev
device. The transport was implemented through device specific ops
which is a part of mdev_parent_ops now.
Signed-off-by: Jason Wang
---
drivers/vfio/mdev
On 2019/9/20 上午10:16, Tiwei Bie wrote:
On Fri, Sep 20, 2019 at 09:30:58AM +0800, Jason Wang wrote:
On 2019/9/19 下午11:45, Tiwei Bie wrote:
On Thu, Sep 19, 2019 at 09:08:11PM +0800, Jason Wang wrote:
On 2019/9/18 下午10:32, Michael S. Tsirkin wrote:
So I have some questions:
1) Compared to
On 2019/9/20 上午8:05, Matt Cover wrote:
On Thu, Sep 19, 2019 at 3:45 PM Matthew Cover wrote:
WORK IN PROGRESS:
* bpf program loading works!
* txq steering via bpf program return code works!
* bpf program unloading not working.
* bpf program attached query not working.
This patch s
On 2019/9/19 下午11:45, Tiwei Bie wrote:
On Thu, Sep 19, 2019 at 09:08:11PM +0800, Jason Wang wrote:
On 2019/9/18 下午10:32, Michael S. Tsirkin wrote:
So I have some questions:
1) Compared to method 2, what's the advantage of creating a new vhost char
device? I guess it's for ke
On 2019/9/19 下午11:45, Tiwei Bie wrote:
On Thu, Sep 19, 2019 at 09:08:11PM +0800, Jason Wang wrote:
On 2019/9/18 下午10:32, Michael S. Tsirkin wrote:
So I have some questions:
1) Compared to method 2, what's the advantage of creating a new vhost char
device? I guess it's for ke
On 2019/9/18 下午10:32, Michael S. Tsirkin wrote:
So I have some questions:
1) Compared to method 2, what's the advantage of creating a new vhost char
device? I guess it's for keep the API compatibility?
One benefit is that we can avoid doing vhost ioctls on
VFIO device fd.
Yes, but any benefi
On 2019/9/18 上午3:00, Alex Williamson wrote:
On Tue, 10 Sep 2019 16:19:33 +0800
Jason Wang wrote:
This patch introduces mdev_set_dma_ops() which allows parent to set
per device DMA ops. This help for the kernel driver to setup a correct
DMA mappings.
Signed-off-by: Jason Wang
---
drivers
On 2019/9/17 下午6:58, Tiwei Bie wrote:
On Tue, Sep 17, 2019 at 11:32:03AM +0800, Jason Wang wrote:
On 2019/9/17 上午9:02, Tiwei Bie wrote:
This RFC is to demonstrate below ideas,
a) Build vhost-mdev on top of the same abstraction defined in
the virtio-mdev series [1];
b) Introduce /dev
On 2019/9/17 上午9:02, Tiwei Bie wrote:
More details about this patch can be found from the cover
letter for now. Only compile test has been done for now.
Signed-off-by: Tiwei Bie
---
drivers/vhost/Kconfig| 9 +
drivers/vhost/Makefile | 3 +
drivers/vhost/mdev.c
On 2019/9/17 上午9:02, Tiwei Bie wrote:
This RFC is to demonstrate below ideas,
a) Build vhost-mdev on top of the same abstraction defined in
the virtio-mdev series [1];
b) Introduce /dev/vhost-mdev to do vhost ioctls and support
setting mdev device as backend;
Now the userspace API lo
On 2019/9/17 上午9:02, Tiwei Bie wrote:
This RFC is to demonstrate below ideas,
a) Build vhost-mdev on top of the same abstraction defined in
the virtio-mdev series [1];
b) Introduce /dev/vhost-mdev to do vhost ioctls and support
setting mdev device as backend;
Now the userspace API lo
move vfio callbacks there
Sent for early reivew, compile test only!
Thanks
[1] https://lkml.org/lkml/2019/9/10/135
Jason Wang (2):
mdev: device id support
mdev: introduce device specific ops
drivers/gpu/drm/i915/gvt/kvmgt.c | 16 ---
drivers/s390/cio/vfio_ccw_ops.c | 16
On 2019/9/11 下午5:36, Michael S. Tsirkin wrote:
On Wed, Sep 11, 2019 at 10:38:39AM +0800, Jason Wang wrote:
On 2019/9/10 下午9:52, Michael S. Tsirkin wrote:
On Tue, Sep 10, 2019 at 09:13:02PM +0800, Jason Wang wrote:
On 2019/9/10 下午6:01, Michael S. Tsirkin wrote:
+#ifndef _LINUX_VIRTIO_MDEV_H
On 2019/9/11 上午9:47, Tiwei Bie wrote:
On Tue, Sep 10, 2019 at 04:19:34PM +0800, Jason Wang wrote:
This path introduces a new mdev transport for virtio. This is used to
use kernel virtio driver to drive the mediated device that is capable
of populating virtqueue directly.
A new virtio-mdev
On 2019/9/10 下午9:52, Michael S. Tsirkin wrote:
On Tue, Sep 10, 2019 at 09:13:02PM +0800, Jason Wang wrote:
On 2019/9/10 下午6:01, Michael S. Tsirkin wrote:
+#ifndef _LINUX_VIRTIO_MDEV_H
+#define _LINUX_VIRTIO_MDEV_H
+
+#include
+#include
+#include
+
+/*
+ * Ioctls
+ */
Pls add a bit more
On 2019/9/10 下午6:15, Michael S. Tsirkin wrote:
On Tue, Sep 10, 2019 at 04:19:35PM +0800, Jason Wang wrote:
This sample driver creates mdev device that simulate virtio net device
over virtio mdev transport. The device is implemented through vringh
and workqueue.
Signed-off-by: Jason Wang
On 2019/9/10 下午6:01, Michael S. Tsirkin wrote:
+#ifndef _LINUX_VIRTIO_MDEV_H
+#define _LINUX_VIRTIO_MDEV_H
+
+#include
+#include
+#include
+
+/*
+ * Ioctls
+ */
Pls add a bit more content here. It's redundant to state these
are ioctls. Much better to document what does each one do.
Ok.
This sample driver creates mdev device that simulate virtio net device
over virtio mdev transport. The device is implemented through vringh
and workqueue.
Signed-off-by: Jason Wang
---
samples/Kconfig| 7 +
samples/vfio-mdev/Makefile | 1 +
samples/vfio-mdev/mvnet.c | 766
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